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【プロセスエンジニアリング地域-化学工学ソフトウェア交流版-毎日一問-第02~12問】

2019-02-12View Original

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【工程技術エリア-化学工学ソフトウェア交流版-毎日一問-第02~12問】機械製図において、描画板は( )を固定するために使われ、丁字定規は水平線を引くために使われる。 図面。

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